Made it work

src/app/app.component.html

@@ -1,20 +1,19 @@
 <!--The content below is only a placeholder and can be replaced.-->
-<div style="text-align:center">
-  <h1>
-    Welcome to {{ title }}!
-  </h1>
-  <img width="300" alt="Angular Logo" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg==">
+<mat-toolbar>
+    <span>ETF Demo</span>
+    <span class="mx-auto"><!-- Spacer --></span>
+    <button mat-button (click)="fileUploader.click()">
+        <mat-icon>add</mat-icon>
+        Upload
+    </button>
+</mat-toolbar>
+<div *ngIf="chartResults" class="w-100" [style.height]="chartHeight">
+    <ngx-charts-bar-horizontal-2d #chart
+                                [results]="chartResults"
+                                [xAxis]="true"
+                                [yAxis]="true"
+                                [yAxisTickFormatting]="format">
+    </ngx-charts-bar-horizontal-2d>
 </div>
-<h2>Here are some links to help you start: </h2>
-<ul>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://angular.io/tutorial">Tour of Heroes</a></h2>
-  </li>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://angular.io/cli">CLI Documentation</a></h2>
-  </li>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://blog.angular.io/">Angular blog</a></h2>
-  </li>
-</ul>
 
+<input #fileUploader type="file" accept="text/csv" multiple hidden (change)="upload(fileUploader.files)">